/* Huoyang's youthful Joe3 layer. The upstream Joe3 files stay untouched. */
html {
  --radius-wrap: 18px;
  --radius-inner: 12px;
  --radius-img: 14px;
  --box-shadow: 0 18px 48px -34px rgba(91, 33, 182, 0.48);
  --block-shadow: 0 18px 44px -28px rgba(91, 33, 182, 0.42);
  --background-tags: #faf5ff;
  --code-background: #f5f3ff;
  --code: #7c3aed;
  --quote: #f472b6;
}

html[data-mode='dark'] {
  --background: #171521;
  --sub-background: #201d2c;
  --sib-background: #242031;
  --classC: #342e47;
  --classD: #29243a;
  --code-background: #2c2541;
  --code: #c4b5fd;
  --box-shadow: 0 20px 52px -34px rgba(0, 0, 0, 0.88);
  --block-shadow: 0 20px 48px -32px rgba(0, 0, 0, 0.9);
}

body::after {
  background-color: #f8f7ff;
  background-image:
    radial-gradient(circle at 10% 15%, rgba(244, 114, 182, 0.10), transparent 28%),
    radial-gradient(circle at 92% 8%, rgba(129, 140, 248, 0.14), transparent 30%),
    linear-gradient(rgba(124, 58, 237, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 58, 237, 0.035) 1px, transparent 1px);
  background-size: auto, auto, 28px 28px, 28px 28px;
}

html[data-mode='dark'] body::after {
  background-color: #12101a;
  background-image:
    radial-gradient(circle at 10% 15%, rgba(244, 114, 182, 0.08), transparent 30%),
    radial-gradient(circle at 92% 8%, rgba(129, 140, 248, 0.11), transparent 32%),
    linear-gradient(rgba(196, 181, 253, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 181, 253, 0.028) 1px, transparent 1px);
  background-size: auto, auto, 28px 28px, 28px 28px;
}

.joe_header__above {
  border-bottom: 1px solid rgba(124, 58, 237, 0.10);
  box-shadow: 0 12px 35px -28px rgba(76, 29, 149, 0.55);
}

.joe_header__above.glass {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px) saturate(135%);
}

html[data-mode='dark'] .joe_header__above.glass {
  background: rgba(23, 21, 33, 0.84);
}

.joe_index,
.joe_aside__item,
.joe_detail,
.joe_archive,
.joe_card__default,
.joe_card__describe {
  border: 1px solid rgba(124, 58, 237, 0.09);
}

.joe_index__article {
  padding: 4px 18px 10px;
}

.joe_list__item {
  border-bottom-color: rgba(124, 58, 237, 0.10);
  border-radius: 14px;
  padding-left: 12px;
  padding-right: 12px;
  transition: background-color 0.25s ease, transform 0.25s ease;
}

.joe_list__item:hover {
  background: linear-gradient(110deg, rgba(244, 114, 182, 0.055), rgba(129, 140, 248, 0.07));
  transform: translateY(-2px);
}

.joe_list__item::before {
  left: 0;
  background: linear-gradient(180deg, #f472b6, #8b5cf6);
}

.joe_list__item .thumbnail,
.joe_list__item .thumbnail img,
.joe_detail__article img {
  border-radius: 14px;
}

.joe_aside__item.author .image {
  filter: saturate(0.94) brightness(0.9);
}

.joe_aside__item.author .user .avatar {
  border: 4px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 30px -16px rgba(76, 29, 149, 0.7);
}

.joe_index__title-title .line,
.joe_header__above-nav .item::after {
  background: linear-gradient(90deg, #f472b6, #8b5cf6);
}

#EvanBigBanner::after {
  background: linear-gradient(90deg, rgba(17, 16, 28, 0.30), rgba(17, 16, 28, 0.03), rgba(17, 16, 28, 0.28));
  content: '';
  inset: 0;
  pointer-events: none;
  position: absolute;
}

#EvanBigBanner .evan-big-banner-content {
  position: relative;
  z-index: 1;
}

.joe_detail__article h1[hidden] {
  display: none !important;
}

.engineering-lead {
  margin: 0.4rem 0 1.6rem;
  padding: 1rem 1.15rem;
  border-left: 4px solid #8b5cf6;
  border-radius: 0 12px 12px 0;
  background: linear-gradient(105deg, rgba(139, 92, 246, 0.10), rgba(244, 114, 182, 0.045));
  line-height: 1.8;
}

.engineering-metrics,
.engineering-skills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 1.35rem 0 2rem;
}

.engineering-metric,
.engineering-skill {
  min-width: 0;
  padding: 1rem 1.05rem;
  border: 1px solid rgba(139, 92, 246, 0.16);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.82), rgba(250, 245, 255, 0.66));
  box-shadow: 0 12px 30px -26px rgba(76, 29, 149, 0.65);
}

html[data-mode='dark'] .engineering-metric,
html[data-mode='dark'] .engineering-skill {
  border-color: rgba(196, 181, 253, 0.16);
  background: linear-gradient(145deg, rgba(52, 46, 71, 0.82), rgba(36, 32, 49, 0.75));
}

.engineering-metric strong {
  display: block;
  margin-bottom: 0.28rem;
  color: #7c3aed;
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

html[data-mode='dark'] .engineering-metric strong {
  color: #c4b5fd;
}

.engineering-metric span,
.engineering-skill p {
  display: block;
  color: var(--minor, #6b7280);
  font-size: 0.9rem;
  line-height: 1.65;
}

.engineering-skill h3 {
  margin: 0 0 0.55rem;
  color: var(--routine, #374151);
  font-size: 1.04rem;
}

.engineering-skill p {
  margin: 0;
}

.engineering-timeline {
  margin: 1.5rem 0 2rem;
  padding-left: 1.35rem;
  border-left: 2px solid rgba(139, 92, 246, 0.38);
}

.engineering-timeline > div {
  position: relative;
  margin-bottom: 1.25rem;
}

.engineering-timeline > div::before {
  position: absolute;
  top: 0.42rem;
  left: -1.68rem;
  width: 0.58rem;
  height: 0.58rem;
  border: 2px solid #8b5cf6;
  border-radius: 50%;
  background: var(--background, #fff);
  content: '';
}

@media (min-width: 768px) {
  .engineering-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .engineering-skills {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  html {
    --radius-wrap: 14px;
    --radius-inner: 10px;
  }

  .joe_index__article {
    padding: 2px 8px 8px;
  }

  .joe_list__item {
    border-radius: 10px;
    padding-left: 8px;
    padding-right: 8px;
  }

  #EvanBigBanner {
    background-position: center center !important;
  }
}

@media (max-width: 520px) {
  .engineering-metrics,
  .engineering-skills {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}


/* Mature Halo-inspired polish: centered navigation, quiet depth, and knowledge cards. */
:root {
  --momo-ink: #242033;
  --momo-muted: #6f6a82;
  --momo-accent: #7657e8;
  --momo-accent-2: #ec72b2;
  --momo-border: rgba(118, 87, 232, 0.14);
  --momo-glass: rgba(255, 255, 255, 0.78);
}

body {
  color: var(--momo-ink);
  font-family: "Noto Sans SC", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  letter-spacing: 0.005em;
}

.joe_header_container.full {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
}

.joe_header__above-logo {
  justify-self: start;
  position: relative;
  z-index: 2;
}

.joe_header__above-logo img {
  outline: 3px solid rgba(255, 255, 255, 0.9);
  outline-offset: -3px;
  box-shadow: 0 7px 22px -12px rgba(73, 47, 150, 0.85);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.joe_header__above-logo:hover img,
.joe_header__above-logo:focus-visible img {
  transform: translateY(-1px) rotate(-2deg);
  box-shadow: 0 12px 30px -14px rgba(73, 47, 150, 0.95);
}

.joe_header__above-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.joe_header__above-nav::-webkit-scrollbar { display: none; }

.joe_header__above-nav .item {
  width: auto !important;
  flex: 0 0 auto;
  margin-right: 0 !important;
  padding: 9px 11px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: var(--routine, #4b465c);
  font-size: 0.92rem;
  white-space: nowrap;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.joe_header__above-nav .item:hover,
.joe_header__above-nav .item:focus-visible {
  border-color: rgba(118, 87, 232, 0.17);
  background: linear-gradient(120deg, rgba(244, 114, 182, 0.12), rgba(118, 87, 232, 0.12));
  color: var(--momo-accent);
  transform: translateY(-1px);
}

.joe_header__above-nav .item.active,
.joe_header__above-nav .item.current,
.joe_header__above-nav .item[aria-current="page"] {
  border-color: rgba(118, 87, 232, 0.18);
  background: linear-gradient(120deg, rgba(244, 114, 182, 0.16), rgba(118, 87, 232, 0.16));
  color: var(--momo-accent);
  box-shadow: 0 7px 18px -16px rgba(118, 87, 232, 0.9);
}

.joe_header__above-nav .item .m-icon {
  margin-right: 5px;
  color: inherit;
}

.joe_header__above-search,
.joe_header__above-searchicon { justify-self: end; }

.joe_header__above-search .submit,
.joe_header__above-searchicon {
  box-shadow: 0 10px 24px -16px rgba(118, 87, 232, 0.9);
}

.joe_header__above-searchicon:focus-visible,
.joe_header__above-slideicon:focus-visible,
.joe_header__above-nav .item:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(236, 114, 178, 0.52);
  outline-offset: 3px;
}

#EvanBigBanner {
  min-height: clamp(280px, 34vw, 420px);
  border-radius: 0 0 22px 22px;
  overflow: hidden;
  box-shadow: 0 26px 56px -42px rgba(60, 36, 130, 0.9);
}

#EvanBigBanner::before {
  background: linear-gradient(180deg, rgba(20, 16, 40, 0.05), rgba(20, 16, 40, 0.34));
  content: '';
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 0;
}

.evan-big-banner-content h1,
.evan-big-banner-content .title {
  text-shadow: 0 5px 18px rgba(20, 16, 40, 0.4);
  letter-spacing: 0.08em;
}

.joe_index,
.joe_aside__item,
.joe_detail,
.joe_archive,
.joe_card__default,
.joe_card__describe {
  background: var(--momo-glass);
  box-shadow: 0 20px 46px -38px rgba(76, 54, 145, 0.7);
  backdrop-filter: blur(12px) saturate(120%);
}

.joe_index__title-title,
.joe_aside__item-title,
.joe_detail__title {
  letter-spacing: 0.02em;
}

.joe_aside__item.author .user .avatar_wrapper {
  box-shadow: 0 0 0 7px rgba(118, 87, 232, 0.08), 0 16px 30px -18px rgba(71, 45, 148, 0.9);
}

/* Knowledge-base page */
.momo-knowledge-hero {
  position: relative;
  margin: -0.2rem 0 1.8rem;
  padding: 1.45rem 1.55rem 1.35rem;
  overflow: hidden;
  border: 1px solid rgba(118, 87, 232, 0.18);
  border-radius: 18px;
  background:
    radial-gradient(circle at 92% 16%, rgba(244, 114, 182, 0.22), transparent 30%),
    linear-gradient(132deg, rgba(118, 87, 232, 0.14), rgba(255, 255, 255, 0.68));
  box-shadow: 0 20px 38px -30px rgba(76, 54, 145, 0.72);
}

.momo-knowledge-hero::after {
  position: absolute;
  right: -38px;
  bottom: -55px;
  width: 170px;
  height: 170px;
  border: 1px solid rgba(118, 87, 232, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 14px rgba(118, 87, 232, 0.04), 0 0 0 28px rgba(236, 114, 178, 0.035);
  content: '';
}

.momo-knowledge-kicker {
  color: var(--momo-accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.momo-knowledge-hero h2 {
  position: relative;
  z-index: 1;
  margin: 0.4rem 0 0.55rem;
  color: var(--momo-ink);
  font-size: clamp(1.45rem, 3.2vw, 2.15rem);
  letter-spacing: 0.02em;
}

.momo-knowledge-hero p {
  position: relative;
  z-index: 1;
  max-width: 48rem;
  margin: 0;
  color: var(--momo-muted);
  line-height: 1.85;
}

.momo-knowledge-meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.momo-knowledge-meta span,
.momo-knowledge-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 0.75rem;
  line-height: 1;
}

.momo-knowledge-meta span {
  padding: 0.46rem 0.68rem;
  border: 1px solid rgba(118, 87, 232, 0.15);
  background: rgba(255, 255, 255, 0.62);
  color: #5b4cad;
}

.momo-knowledge-notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: baseline;
  margin: 1rem 0 1.6rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--momo-accent-2);
  border-radius: 0 12px 12px 0;
  background: linear-gradient(100deg, rgba(236, 114, 178, 0.10), rgba(118, 87, 232, 0.06));
  color: var(--momo-muted);
  line-height: 1.7;
}

.momo-knowledge-notice strong { color: #a84684; white-space: nowrap; }

.momo-knowledge-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0.85rem 0 2rem;
}

.momo-knowledge-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 1rem 1.05rem 0.95rem;
  border: 1px solid var(--momo-border);
  border-radius: 15px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(249, 246, 255, 0.72));
  box-shadow: 0 16px 30px -28px rgba(76, 54, 145, 0.82);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.momo-knowledge-card::before {
  position: absolute;
  top: 0.9rem;
  bottom: 0.9rem;
  left: 0;
  width: 3px;
  border-radius: 0 4px 4px 0;
  background: linear-gradient(180deg, var(--momo-accent-2), var(--momo-accent));
  content: '';
  opacity: 0.72;
}

.momo-knowledge-card:hover {
  border-color: rgba(118, 87, 232, 0.32);
  box-shadow: 0 22px 34px -26px rgba(76, 54, 145, 0.86);
  transform: translateY(-3px);
}

.momo-knowledge-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  color: var(--momo-muted);
  font-size: 0.76rem;
}

.momo-knowledge-badge { padding: 0.42rem 0.58rem; font-weight: 700; }
.momo-knowledge-badge.adopted { background: rgba(52, 211, 153, 0.16); color: #087f5b; }
.momo-knowledge-badge.observe { background: rgba(129, 140, 248, 0.16); color: #4f46a5; }
.momo-knowledge-badge.trial { background: rgba(251, 191, 36, 0.18); color: #946200; }

.momo-knowledge-card h3 {
  margin: 0.65rem 0 0.35rem;
  color: var(--momo-ink);
  font-size: 1.08rem;
}

.momo-knowledge-card p {
  flex: 1;
  margin: 0 0 0.65rem;
  color: var(--momo-muted);
  font-size: 0.9rem;
  line-height: 1.72;
}

.momo-knowledge-card > a {
  overflow-wrap: anywhere;
  color: var(--momo-accent);
  font-size: 0.82rem;
  font-weight: 600;
}

.momo-knowledge-card > a:hover { color: #b13d88; }
.momo-knowledge-card small { display: block; margin-top: 0.58rem; color: #88819d; line-height: 1.5; }

.momo-knowledge-notice + h2,
.momo-knowledge-grid + h2 { margin-top: 2rem; }

html[data-mode='dark'] {
  --momo-ink: #f1edff;
  --momo-muted: #b4acc9;
  --momo-glass: rgba(31, 28, 45, 0.82);
  --momo-border: rgba(196, 181, 253, 0.16);
}

html[data-mode='dark'] body { color: var(--momo-ink); }
html[data-mode='dark'] .joe_header__above-nav .item { color: #cfc7e4; }
html[data-mode='dark'] .joe_header__above-nav .item:hover,
html[data-mode='dark'] .joe_header__above-nav .item.active,
html[data-mode='dark'] .joe_header__above-nav .item.current,
html[data-mode='dark'] .joe_header__above-nav .item[aria-current="page"] { color: #d8caff; }
html[data-mode='dark'] .momo-knowledge-hero {
  background:
    radial-gradient(circle at 92% 16%, rgba(236, 114, 178, 0.16), transparent 30%),
    linear-gradient(132deg, rgba(118, 87, 232, 0.2), rgba(31, 28, 45, 0.82));
}
html[data-mode='dark'] .momo-knowledge-hero h2,
html[data-mode='dark'] .momo-knowledge-card h3 { color: var(--momo-ink); }
html[data-mode='dark'] .momo-knowledge-meta span { background: rgba(52, 46, 71, 0.7); color: #d4c8ff; }
html[data-mode='dark'] .momo-knowledge-card { background: linear-gradient(145deg, rgba(52, 46, 71, 0.86), rgba(36, 32, 49, 0.76)); }
html[data-mode='dark'] .momo-knowledge-notice { background: linear-gradient(100deg, rgba(236, 114, 178, 0.12), rgba(118, 87, 232, 0.12)); }
html[data-mode='dark'] .momo-knowledge-notice strong { color: #f1a4cc; }

@media (max-width: 1100px) {
  .joe_header_container.full { gap: 10px; }
  .joe_header__above-nav { gap: 2px; }
  .joe_header__above-nav .item { padding: 8px 7px; font-size: 0.86rem; }
}

@media (max-width: 768px) {
  .joe_header_container.full { display: flex; gap: 10px; }
  .joe_header__above-nav { display: none; }
  #EvanBigBanner { min-height: 250px; border-radius: 0 0 16px 16px; }
  .momo-knowledge-hero { padding: 1.15rem 1.1rem 1.1rem; border-radius: 14px; }
  .momo-knowledge-grid { grid-template-columns: 1fr; gap: 11px; }
  .momo-knowledge-notice { grid-template-columns: 1fr; gap: 0.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* 火阳首页：真实 N 比例模型列车视频舞台。 */
/* huoyangRealisticTrainApproach: the WebM advances from the distant track to the foreground once. */
#EvanBigBanner.huoyang-realtrain-hero {
  isolation: isolate;
  background-color: #141523;
}

#EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-stage {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
  background: #141523 url('/themes/theme-Joe3/assets/img/huoyang-nscale-poster.png') 58% center / cover no-repeat;
}

#EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-stage::after {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(9, 12, 24, 0.08), rgba(9, 12, 24, 0.22) 72%, rgba(9, 12, 24, 0.38)),
    radial-gradient(circle at 58% 48%, rgba(255, 255, 255, 0.07), transparent 44%);
  content: '';
  pointer-events: none;
}

#EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-video {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 58% center;
  background: transparent;
  filter: saturate(0.96) contrast(1.03);
}

#EvanBigBanner.huoyang-realtrain-hero > .legacy-big-banner-video { display: none !important; }
#EvanBigBanner.huoyang-realtrain-hero .infomation { position: relative; z-index: 3; }
#EvanBigBanner.huoyang-realtrain-hero .evan-big-banner_goto,
#EvanBigBanner.huoyang-realtrain-hero .evan-big-banner_bottom { position: relative; z-index: 4; }

/* The index title and quote are retained in the DOM for Joe3/SEO hooks but are not painted. */
#EvanBigBanner[data-home-hero='true'] #EvanBigBanner_Title[data-home-hero-title='true'],
#EvanBigBanner[data-home-hero='true'] .desctitle,
#EvanBigBanner.huoyang-realtrain-hero #EvanBigBanner_Title[data-home-hero-title='true'],
#EvanBigBanner.huoyang-realtrain-hero .desctitle {
  display: none !important;
}

#EvanBigBanner[data-home-hero='true'] .infomation,
#EvanBigBanner.huoyang-realtrain-hero .infomation { pointer-events: none; }
#EvanBigBanner.huoyang-realtrain-hero.huoyang-realtrain-fallback .huoyang-realtrain-stage {
  background-image: url('/themes/theme-Joe3/assets/img/huoyang-nscale-poster.png');
}
#EvanBigBanner.huoyang-realtrain-hero.huoyang-realtrain-fallback .huoyang-realtrain-video {
  visibility: hidden;
  opacity: 0;
}

@media (max-width: 900px) {
  #EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-video {
    object-position: 58% center;
  }
}

@media (max-width: 600px) {
  #EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-stage {
    background-position: 58% center;
  }
  #EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-video {
    object-position: 58% center;
  }
}

@media (prefers-reduced-motion: reduce) {
  #EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-video {
    visibility: hidden;
    opacity: 0;
  }
  #EvanBigBanner.huoyang-realtrain-hero .huoyang-realtrain-stage {
    background-image: url('/themes/theme-Joe3/assets/img/huoyang-nscale-poster.png');
  }
}